Section B Solve the following problems carefully with detailed workings, steps and answer statements. Write all your answers on the spaces provided below each question. 3. The demand equation of a pack of computer tutorial software produced by a certain company s p= %x +150, where p i1s the price per pack in dollars and x is the weekly number of units sold. Assume that the fixed costs for the software are $1000, with variable costs of $5 per pack. a. Formulate the weekly cost. the weekly revenue and the weekly profit functions in terms of x. (8 marks) . Write the restricted domain and the restricted range of the revenue function. (6 marks) . Find the break-even production level(s). (8 marks) . What price results 1n maximum weekly profit? (6 marks) /e N o e. What 1s the expected maximum weekly profit? (2 marks)